Title :
Millimeter-sized shape memory alloy bending actuator using buckling of the beam
Author :
Kwang-Ho Lee ; Lee, Kwang-Ho
Author_Institution :
Dept. of Electr. Eng., Dankook Univ., Seoul, South Korea
Abstract :
We have proposed a novel bending actuator for a catheter, of which the major components are a shape memory alloy spring, a stainless steel strip and two acrylic links. In order to analyse the characteristics of the proposed bending actuator, the buckling equation of the beam has been used and compared with experimental results on the fabricated actuator. Experimental results show excellent agreement with calculated values. Also, a micro model has been fabricated and characterized for possible application to micro active catheters. The repeatable actuation of the micro model is found to be adequate for practical application
Keywords :
bending; biomedical equipment; buckling; intelligent actuators; microactuators; shape memory effects; acrylic links; beam buckling; buckling equation; micro active catheters; micro model; millimeter-sized actuator; repeatable actuation; shape memory alloy bending actuator; shape memory alloy spring; shear modulus; stainless steel strip; Actuators; Catheters; Equations; Fabrication; Manufacturing; Shape memory alloys; Springs; Steel; Strips; Temperature;
Conference_Titel :
Micromechatronics and Human Science, 1997. Proceedings of the 1997 International Symposium on
Conference_Location :
Nagoya
Print_ISBN :
0-7803-4171-6
DOI :
10.1109/MHS.1997.768882
